Hey -
So to make sure I understand what steps you’re taking to induce the crash, you open a new project from the Launcher and then use the Modes window to pull in different bsp? Is there anything that I’m missing that happens before the crash?
Also, if you could post your log files it will help us determine what is causing the crash. The logs we need are in the Saved folder inside your project folder. If there are multiple files in the Logs folder, the set created immediately following the crash would be the most useful.
Cheers